LG LCN340CP Service Manual - Page 31

Installation 2) Adjusting air volume to the height of ceiling You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the comfortable atmosphere to consumers. Procedure 1. Choose the selectable position in the table after measuring the height of ceiling. Ceiling height more than 3.3m(10.8ft) 2.7~3.3m(8.9~10.8ft) less than 2.7m(8.9ft) Mode of slide switch High Ceiling Standard Low Ceiling Change of air volume Increasing Decreasing Remark Maunfactured in standard mode 2. In the case of changing the height as "high" or "low", open the rear cover of the wired remote-controller. 3. Move the slide switch to the set position. 4. Close the rear cover and check if it works nomally. 1 1 2 3 2 1 2 3 3 Slide switch for ceiling height 3) Group Control It operates maximum 16 Units by only one Wired Remote Controller, and each Unit starts sequentially to prevent overcurrent. Wiring design Main PCB Indoor Unit 1 Terminal(Local Supply) Block Connector RED(12V) YL(SIGNAL) BR(GND) RED(12V) YL(SIGNAL) BR(GND) Main PCB #1 Indoor Unit 2 Terminal(Local Supply) Block Connector YL(SIGNAL) BR(GND) YL(SIGNAL) BR(GND) Main PCB #2 Indoor Unit 16 Terminal(Local Supply) Block Connector .... YL(SIGNAL) BR(GND) YL(SIGNAL) BR(GND) Main PCB #16 .... Connecting Cable(Local Supply) AUTO SWING OPERATION SET TEMP Room Temp FAN SPEED SUB FUNCTION HI AUTO Heater Preheat MED JET Defrost Humidify LO Filter Out door Time ZONE 1234 Timer Operation unit Program set On Off Set no. Time 01 03 05 07 09 11 13 15 17 19 21 23 Wired Remote Controller S/W GR Single Control Group Control 1 Group Control 2 Remote Controller PCB • Using the supplied Wired Remote Controller, wire them like above. • Move S/W GR to "Group Control 1" position. • Check the line color of the wire. CAUTION • Be careful not to exchange the color of wires. • The maximum length of connecting wire should be below 200m(656ft)(25Ω) on connecting each units. • Use a wire more than 0.5mm2 Service Manual 31